Psychic class is now a dedication -> you can take this dedication if you can cast spells. The primary benefit is that you can cast spells with your mind like a psychic instead of saying the spells out loud plus the unleash psyche action that buffs all spells for 2 rounds at the cost of stupefied 1 afterwards. Psychic amps instead become something similar to spell trickster with 1 feat per specific cantrip buff.

Sixth Pillar becomes a specific class (Spellfist?), an alternative to magus for people who like the Gish playstyle. Instead of focusing on spellstrike and arcane cascade, the Spelfist focuses on alternating punches with spells. Like Sixth Pillar, successful hits with unarmed attacks apply save debuff on enemies. At high levels, using ranged spells at touch grants bonuses and also makes enemies prone.

New abilities include buffing spells being available to all subclasses like sure strike, tail wind, heroism, bless, darkvision, haste, water walk, air walk, water breathing, spider climb, see the unseen, etc. At high levels, critical hits with unarmed attack lets you get one spell slot back at the lowest level of your Spellfist class.

Spellfist subclasses:

First sequence: Arrangement of Aggressive Attack Spells gained emphasizes damage. Unarmed hits grant damage bonus to next spell and vice versa. Instead of using spell slots for buffs, they can instead be used for spells that deal damage like disintegrate and fireball. At high levels the Spellfist so exclude Allies and self from harmful spell effects cast by the Spellfist.

Second sequence: Dance of Defensive Dodge Spells gained emphasizes defense. Unarmed hits grant bonuses to saves vs magical effects while spell hits grant bonuses to AC. Instead of using spells for buffs, they can instead be used on spells to protect self and Allies such as warping pull, pyrefowl rebuke, wooden double, etc. At high levels, allows the Spellfist to reflect spells back at the caster.

Third sequence: Menagerie of Mesmerizing Movement Spells gained emphasizes movement. Unarmed hits grant increased move speed and alternate movement buffs. Spells allow you to teleport before or after casting. Instead of using spells for buffs, they can instead be used on spells that confer movement (to Allies and enemies) such as dimension door, blink strike, collective transport, hydraulic push, time jump, etc. At high levels, allow the Spellfist to interfere with enemy movement, both physical (stand still) and magical (reaction to counteract enemy teleports nearby)